<template>
  <div class="my-counter">
    <button type="button" class="btn btn-light" @click="good.goods_count>0?good.goods_count--:0">-</button>
    <input type="number" class="form-control inp" v-model="good.goods_count">
    <button type="button" class="btn btn-light" @click="good.goods_count++">+</button>
  </div>
</template>

<script>
export default {
  //h获取MyGoods传递过来的数据，渲染
  props: {
    good: Object
  },
  //监听count变化
  watch: {
    good: {
      deep: true,
      handler() {
        if (this.good.goods_count < 0) {
          this.good.goods_count = 0
        }
      }
    }
  }
}
</script>

<style lang="less" scoped>
.my-counter {
  display: flex;

  .inp {
    width: 45px;
    text-align: center;
    margin: 0 10px;
  }

  .btn,
  .inp {
    transform: scale(0.9);
  }
}
</style>